20 instances from 5 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 21 7 Jun 21, 2018 7 instances 06:31:53 06:31:57 06:32:38 06:32:42 06:37:35 06:37:38 20:32:06 Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 30 2 Dec 30, 2017 2 instances 08:28:53 08:28:57 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 13:10:29 13:16:05 13:16:28 13:17:05 Oct 2 2 Oct 2, 2016 2 instances 00:51:55 01:05:23 5 3 Oct 5, 2016 3 instances 01:00:18 01:24:07 02:11:03 Nov Dec